--- a/src/share/classes/javax/swing/text/html/parser/Parser.java	Fri May 17 14:11:06 2013 +0400
+++ b/src/share/classes/javax/swing/text/html/parser/Parser.java	Tue May 21 03:20:27 2013 +0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1980,11 +1980,12 @@
 
     void parseScript() throws IOException {
         char[] charsToAdd = new char[SCRIPT_END_TAG.length];
+        boolean insideComment = false;
 
         /* Here, ch should be the first character after <script> */
         while (true) {
             int i = 0;
-            while (i < SCRIPT_END_TAG.length
+            while (!insideComment && i < SCRIPT_END_TAG.length
                        && (SCRIPT_END_TAG[i] == ch
                            || SCRIPT_END_TAG_UPPER_CASE[i] == ch)) {
                 charsToAdd[i] = (char) ch;
@@ -2025,6 +2026,13 @@
                     break;
                 default:
                     addString(ch);
+                    String str = new String(getChars(0, strpos));
+                    if (!insideComment && str.endsWith(START_COMMENT)) {
+                        insideComment = true;
+                    }
+                    if (insideComment && str.endsWith(END_COMMENT)) {
+                        insideComment = false;
+                    }
                     ch = readCh();
                     break;
                 } // switch

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/swing/text/html/parser/Parser/7011777/bug7011777.java	Tue May 21 03:20:27 2013 +0400
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7011777
+ * @summary Tests correct parsing of a HTML comment inside 'script' tags
+ * @author Dmitry Markov
+ */
+
+import javax.swing.text.html.HTMLEditorKit;
+import javax.swing.text.html.parser.ParserDelegator;
+import java.io.StringReader;
+
+public class bug7011777 {
+    static String comment = "<!--\n" +
+            "function foo() {\n" +
+            "  var tag1 = \"</script>\";\n" +
+            "  var tag2 = \"<div>\";\n" +
+            "  var tag3 = \"</div>\";\n" +
+            "  var tag4 = \"<script>\";\n" +
+            "}\n" +
+            "// -->";
+    static String html = "<script>" + comment + "</script>";
+    public static void main(String[] args) throws Exception {
+            new ParserDelegator().parse(new StringReader(html), new MyParserCallback(), true);
+    }
+
+    static class MyParserCallback extends HTMLEditorKit.ParserCallback {
+
+        @Override
+        public void handleComment(char[] data, int pos) {
+            String commentWithoutTags = comment.substring("<!--".length(), comment.length() - "-->".length());
+            String str = new String(data);
+            if (!commentWithoutTags.equals(str)) {
+                System.out.println("Sample string:\n" + commentWithoutTags);
+                System.out.println("Returned string:\n" + str);
+                throw new RuntimeException("Test Failed, sample and returned strings are mismatched!");
+            }
+        }
+    }
+
+}